The value of θ, where 180º ≤ θ ≤ 360º, in the equation 2cos2θ + cosθ =0 would be? i) θ = 90º, 120º ii)θ = 90º, 120º, 240º 270º iii)θ = 240º, 270º iv)θ = 60º, 90º, 270º ,300º

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A: As per bartleby guidelines one question should be solved once, so please upload each question…

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A: Prove that there are 2 different triangles with Angle A = 30 degrees , side a = 3cm and side b = 4cm…

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A: we can show it by first principal

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